摘要： 剖析了JTAG标准的精髓,分析了其组成﹑功能与时序控制等关键技术,结合一款通用CPU的具体要求,给出了一种实现JTAG结构的具体方法,并介绍了其功能测试的方法。

关键词: 边界扫描, 可测性设计, IEEE1149.1标准(JTAG)

Abstract: This paper analyzes the JTAG standard, which includes the structure, function and control of JTAG. It gives a concrete method to design a JTAG, and this method has been used in the design of a general-purposed CPU. At last, a method to verify the design of JTAG is given.

中图分类号: 

• TP332